Pulverizer.



OSCAR GERLACH, OF LA SALLE, ILLINOIS-s LVERIZER.

Application sied May 1s, 1914.- vserial No. 839,202.

To all whom t may concern Be it known that 1, OSCAR GERLACH, a subject of the Emperor of Germany, residing at La Salle, in'the county of La Salle and State of Illinois, have invented a new and useful. Pulverizer, of which the followA ing is a specification.

My invention' relates to pulverizers in Which a series'of tumblers or crushing elements fall around by gravity Within a suitable container, aiid the objects of my improvements are, first, to increase the capacity of the output Without enlarging the container; second, to provide a series of crushing rings and means for retaining the same in alinement in prearranged groups; third.l tomake, a simple, strong and durable device and other' features to become apparent from .the description to f ollow. a

In pulverizers it is desirable and practi` cally necessary for efficient Work, to have 'the tumblers or crushingelements of suficient Weight to reduce the coarser particles to the desired iineness and in my improved device the constructionis such that a greater Weight will automatically be' brought to bear on the coarser particles, thus automatically .bringing about a. very desirable result.

The pulverizer comprises a cylindrical container and a plurality of tumbling rings l make and use the same Il have illustrated it on the accompanying sheet of drawing forming a part of this specification and in which: A v

Figure 1 is a longitudinal sectional view of a pulverizer embodying my invention; Fig.'2 is a cross sectional View taken on line 2-2 viewed' lin the direction indicated by the arrows;y Fig. 3 is a similar view but viewed in-the opposite direction; and Fig, 4. is a detail perspective vievv showing .a

single ring on its shaftgremoved from the container.

Specification of Letters Zatent.

Patented Jan'. 18, 1916.

Similarireference characters refer tosimilar parts throughout the several views.

The container 5 is made of any desired l size and is preferably cylindrical in form having the heads 6 and 7 closing its ends. The head 6 at the intake end is provided with the central openingvS through-Which the material to be pulverized isA fed by any special feeding mechanism'not shown." The head 7 at the discharge end is provided with the central opening 9 through which the' finished pulverized material is discharged.

Suitable screens 10' and 1i are provided at the inlet and discharge ends of the container 5 respectively. The screen l0 at the intake end has its perforations near the center as clearly indicated in F ig. 2, and the screen 11 at the dischrgrge end has its perforations remote from. the center as clearlyindicated in Fig. 3. The parts thus far described form no part of my invention and can be of any desired construction.

`Within the container 5 rality blers, each group or series comprising a p1urality of rings "12, which are strung4 on a shaft 13. The shaft 13 is of such length that it is free to tumble about Within the container 5 betweenthe screens 10 and 11 and have a slight play endwise therebetween.

are placed a plurthe inner Wall of the cylindrical con-A tainer 45 being straight longitudinally and each of the shafts 13 beingstraight longitudinally and eachof the-rings beingl fiat 4having a straight longitudinal surface', the shaft 18 of each group will restlequally on each ring 12 of its group' and each ring 12 will rest or be supported on the inner Wall of the container 5, When thelinterion of .the container 5 is free of all material to be pulverized; but asmaterial is fed into the container 5, While the same is beingl rotated on its axis, and lodges under any oneof the rings 12, it is 'clear that said ring will .be

. slightly lifted against the force of gravity by the said material, and the lifting of the ring will naturally result in lifting its copei:

ating shaft. Thus it will be understood that the largest particles of material which lodge between the rings 12 and the inner Wall of container 5 will be subjected to the combined Weight of a ring'12 and a greater or less partof a shaft 123 depending on the location of the ring with respect to the center of the of groups or seriesof crushing tumshaft; z'. el.; if the ring is located at the centerofthev shaft practically the whole weight of the 'shaft will be applied as' acrushing v force on the material,- and if the ring' islocated at one end of the shaft onlyone half.

of the weight ofthe shaft will be applied as. a ,crushing force'on the material. Ofy course thelweight ofthe ring is always applied as a @crushing force `on, .a ll material which` 4passes between the ring and the inner wall ofthe container 5.- y

Some'material whilebeing fed through container 5 will lodge within the rings 12 and will be crushed by the weight ofthe' shaft`l3 which extends through the entire group or seriesof rings. Ipreferably place such a plurality Aof gro-ups of rings and shafts within the container 5 that more than one layer of such groups will be contained therein and they will necessarily pile on top of each other as the container is rotated in a fashion similar to that shown in Figs. 2 and 3.` Thus a multiplicityof material crushing -elements is afforded, which results in a very eflicient apparatus. Each ring l2 'A is preferably provided with a notch or perforationLlllto facilitate the feeding of the material to be crushed underneath the different crushing elements. l f

It will be understood that the inner wall of the container 5 and the outer surfaces of -therings l2 may take a form other than flat; and the several parts may be modified in size and shape without in the least de-z.

parting from the scopel of.v myk invention.

Having thus fully described my invention,

gApril, 1914,v at Danville,

what I lclaim as new and `desiretoi-secure" by 1. v'In a device of the4 class described, a cylindrical container; a plurality of groups contactwith each other by force ofvgravity, each of said groups comprising aplrality ofrings and a shaft extending through said rings to retain them in a-group and permit their free individual.. movement vabout the 2. Inl a device of the class described, a cylindricalcontainer, a plurality of groups of tumblers Within said container held inl 4o of .tumblers within said container, .held infn.-

contact with each other by force of ravity,

each of said groups comprising -a p urality its axis, Aa` plurality of shafts within said container extending parallel to the axis of the container from end to end thereof and free to tumble about therein, and a plurality of tlat rings strung upon each lof said shafts.

In testimony whereof I have signed. my, f5 y name to this specification in the presence of two subscribing witnesses, this 29th day of Illinois.

o. GERLACH.

I' Witnesses: l H. E. ERCANBRACK,

R. BAUKHAGE. 

